Invasive, Indeed

One species—Homo sapiens—consumes nearly a quarter of Earth's natural productivity

Some people live lightly on the land: Bedouin clans roam the deserts of the Middle East and North Africa; small groups of indigenous people follow reindeer herds across frigid Arctic terrain; and tribes of hunter-gatherers forage the plains of southern Africa and the forests of Amazonia and Papua New Guinea.

Then there's the other 6.6 billion of us.

This article is available only to subscribing members. Join SSP today or Log in.